com.google.gerrit.server.account.AccountInfoCacheFactory Maven / Gradle / Ivy
// Copyright (C) 2009 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.gerrit.server.account;
import com.google.gerrit.common.data.AccountInfo;
import com.google.gerrit.common.data.AccountInfoCache;
import com.google.gerrit.reviewdb.client.Account;
import com.google.inject.Inject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/** Efficiently builds an {@link AccountInfoCache}. */
public class AccountInfoCacheFactory {
public interface Factory {
AccountInfoCacheFactory create();
}
private final AccountCache accountCache;
private final Map out;
@Inject
AccountInfoCacheFactory(final AccountCache accountCache) {
this.accountCache = accountCache;
this.out = new HashMap<>();
}
/**
* Indicate an account will be needed later on.
*
* @param id identity that will be needed in the future; may be null.
*/
public void want(final Account.Id id) {
if (id != null && !out.containsKey(id)) {
out.put(id, accountCache.get(id).getAccount());
}
}
/** Indicate one or more accounts will be needed later on. */
public void want(final Iterable ids) {
for (final Account.Id id : ids) {
want(id);
}
}
public Account get(final Account.Id id) {
want(id);
return out.get(id);
}
/**
* Create an AccountInfoCache with the currently loaded Account entities.
* */
public AccountInfoCache create() {
final List r = new ArrayList<>(out.size());
for (final Account a : out.values()) {
r.add(new AccountInfo(a));
}
return new AccountInfoCache(r);
}
}